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/* See LICENSE file for copyright and license details. */
#include "internals.h"
void
zor(z_t a, z_t b, z_t c)
{
size_t n, m;
if (unlikely(zzero(b))) {
SET(a, c);
return;
} else if (unlikely(zzero(c))) {
SET(a, b);
return;
}
MIN_MAX_1(n, m, b->used, c->used);
ENSURE_SIZE(a, m);
if (a == b) {
ZMEM_2OP(a->chars, a->chars, c->chars, n, |);
if (a->used < c->used)
zmemcpy_range(a->chars, c->chars, n, m);
} else if (unlikely(a == c)) {
ZMEM_2OP(a->chars, a->chars, b->chars, n, |);
if (a->used < b->used)
zmemcpy_range(a->chars, b->chars, n, m);
} else if (m == b->used) {
ZMEM_2OP(a->chars, c->chars, b->chars, n, |);
zmemcpy_range(a->chars, b->chars, n, m);
} else {
ZMEM_2OP(a->chars, b->chars, c->chars, n, |);
zmemcpy_range(a->chars, c->chars, n, m);
}
a->used = m;
SET_SIGNUM(a, zpositive2(b, c) * 2 - 1);
}
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